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MySQL - 如果表 A 左连接到表 B,我如何按表 B 中的字段排序?

[英]MySQL - If Table A is LEFT JOINed to Table B, how do I ORDER BY a field in Table B?

这是我的 SQL 查询:

    SELECT  pts.pts_id, 
            pts.pts_name, 
            meds.*
    FROM    pts
            LEFT JOIN meds
            ON pts.pts_id = meds.pts_id_fk
    WHERE   pts.id_fk = $id
      AND   pts_current = 1

pts表(即表A)有以下数据:

pts_id   time
1        Joe
2        Jack
3        Jill

Table meds (即表B)有以下数据:

pts_id_fk   time
1           7AM
1           8AM
1           9AM
2           7AM
2          10AM
3          11AM

我想根据time对这个查询的结果进行ORDER BY

任何建议如何做到这一点?

SELECT  pts.pts_id, 
            pts.pts_name, 
            meds.*
    FROM    pts
            LEFT JOIN meds
            ON pts.pts_id = meds.pts_id_fk
    WHERE   pts.id_fk = $id
      AND   pts_current = 1

ORDER BY pts.pts_id, meds.time

ORDER BY meds.time怎么样

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